Laser system with superposition of temporally or spatially separate laser pulses

摘要

Laser system (0) having - at least one laser pulse source (1) which generates input laser pulses (7) at an input repetition frequency, - at least one combination element (8, 10) which superimposes two or more of the input laser pulses (7) in each case an output laser pulse (11) and thus generates an output laser pulse train at an output repetition frequency, wherein the combination element (8, 10) is assigned at least one phase control element (14, 15) which influences the relative phase position of the input laser pulses (7) superposed in the output laser pulse (11), - an error signal detector ( 16), which derives an error signal (18) from the output laser pulse train, and - a controller (19) which forms from the error signal (18) a control signal (20) for driving the phase control element (14, 15), characterized in that Error signal detector (16) periodically samples the output laser pulse train at the output repetition frequency.